Guy 1: Hey dude, did you see that Target pulled all the Sony UMDs off their shelves?
Guy 2: Yeah, I guess they finally realized UMD stood for Useless Media Disc
Guy 1: Hey, on an unrelated note, did you buy the new album from your favorite band released on a Sony label?
Guy 2: Nah, after that whole rootkit debacle I decided to pirate all music released under Sony. It is what they deserve

1. See UMCP.
2. A name used by students of other Maryland public universities in order to falsify their worth by using the reputation of UMCP.

Guy1: "So, where do you go?"
Guy2: "I go to UMD."
Guy1: "Really? College Park? That's become a very selective and prestigious school in the past few years--"
Guy2: "Actually... I meant University of Maryland, Eastern Shore."
Guy1: "Oh... where's that?"

Universal Media Disc. Sony's new type of CD that is the medium for it's new handheld, the PSP. It is about half the size of a DVD. Since it is the medium for a portable console, it has a plastic case covering it with a small opening for the laser to read it. Sony will also release movies on it. At this current time it is unknown of it will be regionally encoded like DVDs or if any other device besides the PSP will be able to play them.

Unburnable Media Disc. The read-only disc used in a Sony Playstation Portable. Made to be unburnable because people would make UMD Mix-discs which hold loads of songs or even more using a GBA emulator and a GSM player. Not to mention burning copies of commercial games. Destined for failure.

Abbreviation for University of Massachusetts at Dartmouth. Not to be confused with Dartmouth College. It's kinda similar, only UMD doesn't have enough parking, classrooms, or housing, and it looks like a fallout shelter. A spaceship fallout shelter.